Cite

Map of Nebraska and Dakota and portions of the states and territories bordering thereon ... by Bv't. Maj. Gen. G.K. Warren, Maj. Eng'rs. March 1967.

MLA

Map of Nebraska and Dakota and Portions of the States and Territories Bordering Thereon ... by Bv't. Maj. Gen. G.K. Warren, Maj. Eng'Rs. March 1967. J. Bien Lith., 1867. https://collections.library.yale.edu/catalog/15814776.

APA, 6th edition

Map of Nebraska and Dakota and portions of the states and territories bordering thereon ... by Bv't. Maj. Gen. G.K. Warren, Maj. Eng'rs. March 1967. (1867). [Maps]. J. Bien Lith., https://collections.library.yale.edu/catalog/15814776.